Draft and buffing mechanism.



H. T. KRAKAU. DRAFT AND BUFFING MECHANISM. APPLICATION FILED JUNE 17,1907. RENEWED NOV. 24, 1909.

963,158, Patented July 5, 1910.

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wrmzsszs INVENTOR ms "cams PETERS co., WASHINGTON, n c.

H.T .KRAKAU.

D I ZAPT AND BUFFINGMEGHANISM. APPLIOATIOH FILED JUNE 17, 1907. RENEWEDNOV. 24, 1909.

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INVENTOR Patented July 5,1910.

Specification of Letters Patent. Application filed June 17, 1907, SerialNo. 379,375.

Patented July 5, 1910. Renewed November 24, 1909. Serial No. 529,815.

To all whom it may concern."

Be it known that I, HARRY T. KRAKAU, of Cleveland, Cuyahoga county,Ohio, have i11- vented a new and useful Improved Draft and BuffingMechanism, of which the following is a full, clear, and exactdescription,

reference being had to the accompanying drawings, forming part of thisin which Figure 1 is a partial plan view partly in horizontal sectionshowing my improvement; Fig. 2 is a vertical longitudinal section partlyin side elevation; and Fig. 3 is a vertical cross section on the lineIII-III of Fig. 2.

In the drawing 2 represents the car coupler having a rearwardlyextending shank 3 which may be integral as shown in the drawing. It issupported by a suitable carry iron 4, and at its rear end is pivoted ona pin 5 to a yoke 6 which contains a draft spring or springs 7 andfollowers 8, 8. The followers 8, S are preferably held in a frame orcasting 9 supported from the center sills 10, and extending transverselyfrom one center sill to the other as shown in Figs. 2 and 3, and thisframe also has slots or open guide the yoke 6. Durthe travel of the cararound curves, the turn on the axis of the pin 5, but will be free tomove longitudinally under bufiing and draft against the springs 7 whichare held from lateral movement by the frame or casting 9, but are freeto move longitudinally therein with the car coupler.

11 is a buffer having a rearwardly extending shank l1 fixed to or madeintegral with the spring casing 12, which is fitted telescopically on arear spring casing 13, buffer springs 14 being interposed between thesecasings. The rear spring casing 13 has a rearwardly extending shank 14which fits within a socket 15 of the frame or casting 9 and is pivotedtherein on a pin 16, the axis of which is in a line with the axis of thepin 5.

The draft nected with the car truck by telescopically arrangedconnections 17 having springs 18, these connections being pivotallyconnected a sliding socket 21 on the coupler shank and to respectively.The coupler shank is engaged with the buffer so as to permitlongitudinal specification,

gear of coupler shank is con- J motion of these parts independently ofone another, preferably by a pin 23 on the spring casing 12 of thebuffer, which fits within a socket 24 on the coupler shank. The socket24 is open at to permit longitudinal relative motion of the pin andsocket. There isalso preferably a forward connection constituted byplates or bufler will move its radial motion.

stantially at the center of the truck, and in so swinging the draft gearwill turn 011 the axis of the pin 5. y reason of the connection of thedraft gear with the buffer, which may be effected as above described,the buffer will also swing laterally on the axis of the pin 16, which issubstantially concentric with the axis of the pin 5, so that the partswill remain constantly in proper relation.

The construction of the device and the mode of connection of thedraft-gear to the radially swinging buffer may be modified in variousways, since the novel part of my invention relates purely to theradially swinging buffer and the radially swinging draft gear mounted onnearly concentric axes and engaged one with another. Of course, the axeson which the buffer and draft gear turn are not always exactlyconcentric, for the relative position of these axes varies with thelongitudinal movementof the draft gear under buffing and draft, the axisof the draft gear being a longitudinally movable axis, while the axis ofthe buffer in the form shown in the drawing is a fixed axis. freelongitudinal move- 7 sliding connection afforded by the projections 24,25 and 26 in their engagement with the buffer.

I claim 1. A radially swinging draft-member .1 mounted for longitudinalmotion under buffing and draft and for lateral swinging when the carasses around curves, in combination with a aterally swinging bufier,said buffer and draft member being independently pivoted on axes whichare approximately concentric; substantially as described.

2. A radially swinging draft-member mounted for longitudinal motionunder buffing and draft and for lateral swinging when the car passesaround curves, in combination with a laterally swinging buffer, saidbuffer and draft-member being pivotally mounted on approximatelyconcentric and independent axes, and being supported at their ivotalends by a single frame depending from the car structure; substantiallyas described.

3. A radially swinging draft member pivotally connected to a draftrigging, a radially swinging buffer and a frame fixer to the car-sillsextending transversely from one sill to the other and carrying the draftrigging and the pivot of the swinging buffer, substantially asdescribed.

4:. A radially swinging draft member pivotally connected to a draftrigging, a radially swinging buffer and a frame fixed to the car-sillsextending transversely from one sill to the other and depending belowthe car sills and carrying the draft rigging and the pivot of theswinging bufferisubstantially as described.

5. A frame for radial draft gears fixed to the car structure and havinga body portion formed with a pivotal bearing for a swinging buffer and arecess below said pivotal bearing for the reception of a draft rigging.

In testimony whereof, I have hereunto set my hand.

HARRY T. KRAKAU.

\Vitnesses Gnonon H. SONNEBORN, A. E. VVALLACE.

